Elastic self carrying bellows

An elastic self-carrying bellow-body in particular for articulated wheeled vehicles for connecting one part of such vehicle to another part of that vehicle and permitting those vehicle parts to move with respect to each other, the bellow-body having an upper arch, a transverse axis, two side walls and a lower arch with the upper and lower arches being similar to each other and the two side walls being similar to each other, said bellow-body having a longitudinal axis and ends each of which is adapted to be connected to a portion of a vehicle body to couple vehicle body portions together, characterized in that said bellow-body side walls and arches include a multiplicity of ribs which are spaced apart along the longitudinal axis of the bellow-body each of said ribs having a thickness dimension and interconnecting means connecting adjacent ribs of said multiplicity of ribs, said interconnecting means being monolithic with said adjacent ribs so that said bellow body is monolithic and having a thickness dimension less than said rib thickness dimension whereby bending stresses arising from opening and closing of the bellow-body are principally taken up by said interconnecting means so the bellow-body is very expandable and contractable.